A Synthetic View on Momilactones and Related 9β-H Pimarane Skeleton Diterpenoids

Abstract

Allelochemicals are secondary metabolites produced from plants and used to prevent and control the invasion of other plants and microorganisms, with broad application prospects in crop protection. Structurally, momilactones belong to 9β-H pimarane diterpenoids, one of rice’s significant allelochemicals with anti-weeds and antibacterial activity. Rare studies have been reported with the synthesis challenges of the unique 9β-H pimarane skeleton. Hence, synthetic strategies of momilactones and related 9β-H pimarane skeleton are reviewed from 1984 to 2021.

Enhanced upgrading of corncob to furfuryl alcohol with a novel silica-supported SO42−-TiO2 chemocatalyst and immobilized whole-cell biocatalyst

“…According to the report that a solid acid catalyst could transform biomass into FFA as chemocatalysts. 41 Diverse doses of SO 4 2− -TiO 2 /SiO 2 catalysts (1-5 wt%) were applied for the chemical catalysis of CNB into FFA, and had a remarkable influence on the productivity of FFA. As the dose of SO 4 2− -TiO 2 /SiO 2 increased from 1 to 4 wt%, the productivity of FFA was clearly improved, with the FFA yield enhanced from 17.5% to 73.3%.…”

Rice Phytoalexins: Half a Century of Amazing Discoveries; Part I: Distribution, Biosynthesis, Chemical Synthesis, and Biological Activities

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Novel and rapid approach for benzanthrone synthesis: BBr3-promoted annulation of 8-aryl-1-naphthoic acid derivatives

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